ENH: Inital version of EnhanceTubesUsingDiscriminantAnalysis

Change-Id: I2c6df9dda5021628e31c848faabb55db156e710e
ENH: EnhanceTubesUsingDiscriminentAnalysis implemented

Change-Id: If8bf1c6ceff42f776674cee3de14855c09b8822c
ENH: Added tests to EnhanceTubesUsingDiscriminantAnalysis

Change-Id: Ifdc91c2068d9185b1cbcff4b33294b246199428a
BUG: Fixed smartpointer return variables in PDFSegmenter and RidgeSeedFilter

Change-Id: I495a7741411bb4f17370015553c0ebd7f3b4d0c8
STYLE: Implemented style changes recommended on gerrit.

Change-Id: Iab2c1bf2a25d2fdb60317a81bf5f9a363e4beb7d
Merge topic 'stageRidgeExtractionApps'

0f926f8 STYLE: Implemented style changes recommended on gerrit.
dea8637 BUG: Fixed smartpointer return variables in PDFSegmenter and RidgeSeedFilter
6970ec8 ENH: Added tests to EnhanceTubesUsingDiscriminantAnalysis
8fd5be6 ENH: EnhanceTubesUsingDiscriminentAnalysis implemented
f29cc22 ENH: Inital version of EnhanceTubesUsingDiscriminantAnalysis